If you take one city in a region, that region will declare war with you until you conquer each and every city in that region. Sometimes neighboring regions will declare war against you if you start conquering a new region, too.

Additionally, any cities that you have not conquered in regions at war with you will send an army to attack you every few minutes. If you have three cities, for example, and there are four regions that have declared war against you, all cities in those regions will be giving you quite a few attacks on your cities.

We still left plenty of time between attacks for players to make their own moves and build up their armies, though.

That -does- sound like a lot, but alright if you say so!

Yeh but the more happens the more challenging it will be therefore making it more fun